Home / 3,615.58-4,987.41-2,123.20

Finding the Fourth Proportional to 3,615.58, 4,987.41 and 2,123.20

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Solution

The fourth proportional to 3,615.58, 4,987.41 and 2,123.20 is: 2,928.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.58 : 4,987.41 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,615.58/4,987.41 = 2,123.20/x
  3. Step 3: Cross multiply
    3,615.58x = 4,987.41 × 2,123.20
  4. Step 4: Simplify right side
    3,615.58x = 10,589,268.91
  5. Step 5: Solve for x
    x = 10,589,268.91/3,615.58
  6. Step 6: Final answer
    x = 2,928.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.